Ushinawareta Mirai wo Motomete

In the autumn of the early twenty-first century, the seaside district of Uchihama buzzes with the rapid expansion of its local academy. As a newly constructed school building rises nearby, the old campus is slated for closure, prompting students to prepare one final, unforgettable General Club Festival within its soon-to-be-abandoned halls. Determined to honor the legacy of the venue that has housed so many memories, the student body throws itself into the preparations with passionate fervor. At the heart of the festivities is Sou Akiyama, the head of the Astronomy Club, which boasts some of the school's most prominent personalities. Yet, just days before the festival, on October 1st, a troubling request arrives from the student executive committee: strange phenomena have been plaguing the old building. Rumors of ghostly apparitions, unexplained accidents, and a mysterious sleeping sickness have sown unease among the students, and the committee turns to Sou's club for help in quelling the rising panic. As Sou grapples with these unsettling reports, a quiet transfer student named Yui Furukawa—who arrived late in the semester—steps into his life. Her sudden appearance seems to coincide with the growing anomalies, and in that fateful moment, the gears of destiny begin to turn. What starts as a simple farewell to an old school building gradually unfurls into a deeper mystery, one that may tie the past, the present, and a lost future together in ways no one could have anticipated.